/* spec information about this property
name= font-size
css1= http://www.w3.org/TR/2008/REC-CSS1-20080411/#font-size
css2= http://www.w3.org/TR/2008/REC-CSS2-20080411/fonts.html#propdef-font-size
css21= http://www.w3.org/TR/2011/REC-CSS2-20110607/fonts.html#propdef-font-size
css3= http://www.w3.org/TR/2011/WD-css3-fonts-20111004/#propdef-font-size
other= 
*/